#include <drm/drm_fb_helper.h>
#include "virtgpu_drv.h"
-#define VIRTIO_GPU_FBCON_POLL_PERIOD (HZ / 60)
-
static int virtio_gpu_dirty_update(struct virtio_gpu_framebuffer *fb,
bool store, int x, int y,
int width, int height)
left, top, right - left, bottom - top);
return 0;
}
-
-static void virtio_gpu_fb_dirty_work(struct work_struct *work)
-{
- struct delayed_work *delayed_work = to_delayed_work(work);
- struct virtio_gpu_fbdev *vfbdev =
- container_of(delayed_work, struct virtio_gpu_fbdev, work);
- struct virtio_gpu_framebuffer *vgfb = &vfbdev->vgfb;
-
- virtio_gpu_dirty_update(&vfbdev->vgfb, false, vgfb->x1, vgfb->y1,
- vgfb->x2 - vgfb->x1, vgfb->y2 - vgfb->y1);
-}
-
-static void virtio_gpu_3d_fillrect(struct fb_info *info,
- const struct fb_fillrect *rect)
-{
- struct virtio_gpu_fbdev *vfbdev = info->par;
-
- drm_fb_helper_sys_fillrect(info, rect);
- virtio_gpu_dirty_update(&vfbdev->vgfb, true, rect->dx, rect->dy,
- rect->width, rect->height);
- schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD);
-}
-
-static void virtio_gpu_3d_copyarea(struct fb_info *info,
- const struct fb_copyarea *area)
-{
- struct virtio_gpu_fbdev *vfbdev = info->par;
-
- drm_fb_helper_sys_copyarea(info, area);
- virtio_gpu_dirty_update(&vfbdev->vgfb, true, area->dx, area->dy,
- area->width, area->height);
- schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD);
-}
-
-static void virtio_gpu_3d_imageblit(struct fb_info *info,
- const struct fb_image *image)
-{
- struct virtio_gpu_fbdev *vfbdev = info->par;
-
- drm_fb_helper_sys_imageblit(info, image);
- virtio_gpu_dirty_update(&vfbdev->vgfb, true, image->dx, image->dy,
- image->width, image->height);
- schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD);
-}
-
-static struct fb_ops virtio_gpufb_ops = {
- .owner = THIS_MODULE,
- DRM_FB_HELPER_DEFAULT_OPS,
- .fb_fillrect = virtio_gpu_3d_fillrect,
- .fb_copyarea = virtio_gpu_3d_copyarea,
- .fb_imageblit = virtio_gpu_3d_imageblit,
-};
-
-static int virtio_gpufb_create(struct drm_fb_helper *helper,
- struct drm_fb_helper_surface_size *sizes)
-{
- struct virtio_gpu_fbdev *vfbdev =
- container_of(helper, struct virtio_gpu_fbdev, helper);
- struct drm_device *dev = helper->dev;
- struct virtio_gpu_device *vgdev = dev->dev_private;
- struct fb_info *info;
- struct drm_framebuffer *fb;
- struct drm_mode_fb_cmd2 mode_cmd = {};
- struct virtio_gpu_object *obj;
- uint32_t format, size;
- int ret;
-
- mode_cmd.width = sizes->surface_width;
- mode_cmd.height = sizes->surface_height;
- mode_cmd.pitches[0] = mode_cmd.width * 4;
- mode_cmd.pixel_format = DRM_FORMAT_HOST_XRGB8888;
-
- format = virtio_gpu_translate_format(mode_cmd.pixel_format);
- if (format == 0)
- return -EINVAL;
-
- size = mode_cmd.pitches[0] * mode_cmd.height;
- obj = virtio_gpu_alloc_object(dev, size, false, true);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
-
- virtio_gpu_cmd_create_resource(vgdev, obj, format,
- mode_cmd.width, mode_cmd.height);
-
- ret = virtio_gpu_object_kmap(obj);
- if (ret) {
- DRM_ERROR("failed to kmap fb %d\n", ret);
- goto err_obj_vmap;
- }
-
- /* attach the object to the resource */
- ret = virtio_gpu_object_attach(vgdev, obj, NULL);
- if (ret)
- goto err_obj_attach;
-
- info = drm_fb_helper_alloc_fbi(helper);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto err_fb_alloc;
- }
-
- info->par = helper;
-
- ret = virtio_gpu_framebuffer_init(dev, &vfbdev->vgfb,
- &mode_cmd, &obj->gem_base);
- if (ret)
- goto err_fb_alloc;
-
- fb = &vfbdev->vgfb.base;
-
- vfbdev->helper.fb = fb;
-
- strcpy(info->fix.id, "virtiodrmfb");
- info->fbops = &virtio_gpufb_ops;
- info->pixmap.flags = FB_PIXMAP_SYSTEM;
-
- info->screen_buffer = obj->vmap;
- info->screen_size = obj->gem_base.size;
- drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
- drm_fb_helper_fill_var(info, &vfbdev->helper,
- sizes->fb_width, sizes->fb_height);
-
- info->fix.mmio_start = 0;
- info->fix.mmio_len = 0;
- return 0;
-
-err_fb_alloc:
- virtio_gpu_object_detach(vgdev, obj);
-err_obj_attach:
-err_obj_vmap:
- virtio_gpu_gem_free_object(&obj->gem_base);
- return ret;
-}
-
-static int virtio_gpu_fbdev_destroy(struct drm_device *dev,
- struct virtio_gpu_fbdev *vgfbdev)
-{
- struct virtio_gpu_framebuffer *vgfb = &vgfbdev->vgfb;
-
- drm_fb_helper_unregister_fbi(&vgfbdev->helper);
-
- if (vgfb->base.obj[0])
- vgfb->base.obj[0] = NULL;
- drm_fb_helper_fini(&vgfbdev->helper);
- drm_framebuffer_cleanup(&vgfb->base);
-
- return 0;
-}
-static const struct drm_fb_helper_funcs virtio_gpu_fb_helper_funcs = {
- .fb_probe = virtio_gpufb_create,
-};
-
-int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev)
-{
- struct virtio_gpu_fbdev *vgfbdev;
- int bpp_sel = 32; /* TODO: parameter from somewhere? */
- int ret;
-
- vgfbdev = kzalloc(sizeof(struct virtio_gpu_fbdev), GFP_KERNEL);
- if (!vgfbdev)
- return -ENOMEM;
-
- vgfbdev->vgdev = vgdev;
- vgdev->vgfbdev = vgfbdev;
- INIT_DELAYED_WORK(&vgfbdev->work, virtio_gpu_fb_dirty_work);
-
- drm_fb_helper_prepare(vgdev->ddev, &vgfbdev->helper,
- &virtio_gpu_fb_helper_funcs);
- ret = drm_fb_helper_init(vgdev->ddev, &vgfbdev->helper,
- VIRTIO_GPUFB_CONN_LIMIT);
- if (ret) {
- kfree(vgfbdev);
- return ret;
- }
-
- drm_fb_helper_single_add_all_connectors(&vgfbdev->helper);
- drm_fb_helper_initial_config(&vgfbdev->helper, bpp_sel);
- return 0;
-}
-
-void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev)
-{
- if (!vgdev->vgfbdev)
- return;
-
- virtio_gpu_fbdev_destroy(vgdev->ddev, vgdev->vgfbdev);
- kfree(vgdev->vgfbdev);
- vgdev->vgfbdev = NULL;
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff